This listing is for 2 Fluval Sea A3983 LED lights. Can be used for fresh water or sea marine. Condition is “USED” but both lights work good Look them up! They go for $245 each brand new. Key Features: - Full Spectrum Marine & Reef LED Lighting - Essential actinic blue spectral wavelengths - Promotes and supports strong coral growth and colour - Balanced combination of multiple LEDs for optimal coral photosynthetic activity, growth & viewing - Features 6 unique LEDs, including 400, 420, 440, 460nm LEDs for outstanding blue spectrum coverage - High CRI for accurate colour rendition and perfectly balanced lighting - 25,000 K Colour Temperature - 120 degree light dispersion for full area coverage and uniform lighting - Versatile mounting options (on frame, on cabinet, or suspended) - 3 position magnetic switch with day/night off modes - Extendable mounting brackets allow easy installation on a variety of aquarium widths - Extendable range: 61 to 85 cm (24" to 34") - Watts: 25 W - Lumens: 1115 lm - Total LED Count : 312 One of the power supply’s will need to be replaced or cleaned out as it was getting corrosion, there for making minimal contact I believe a good cleaning would fix that issue but I’m not 100% sure. Will need one power supply cleaned or replaced